单项选择题
Cisco路由器执行show access-list命令，显示如下一组信息：
Standard IP access list block
deny 10.0.0.0,wildcardbits 0.255.255.255 log
deny 172.16.0.0,wildcard bits 0.15.255,255
permit any
根据上述信息，正确的access-list配置是______。
A．Router(config)#access-list standard blockRouter(config-std-nacl)#deny 10.0.0.0 255.0.0.0 logRouter fconfig-std-nacl)#deny 172.16.0.0 255.240.0.0Router(config-std-nacl)#permit any
B．Router(config)#ip access-list standard blockRouter(config-std-nacl)#permit anyRouter(config-std-nacl)#deny 10.0.0.0 0.255.255.255 logRouter(config-std-nacl)#deny 172.16.0.0 0.15.255.255
C．Router(config)#ip access-list standard blockRouter(config-std-nacl)#deny 10.0.0.0 255.0.0.0 logRouter(config-std-nacl)#deny 172.16.0.0 255.240.0.0Router(config-std-nacl)#permit any
D．Router(config)#ip access-list standard blockRouter(config-std-nacl)#deny 10.0.0.0 0.255.255.255 logRouter(config-std-nacl)#deny 172.16.0.0 0.15.255.255Router(config-std-nacl)#permit any
